On 20 July 2011 in South Dâmboviţa County weather was warmly, hot on middle of the day, with maximum heat values being between 320C at Târgovişte and 350C at Titu. Atmospheric instability has increased gradually in the evening, when there were rain showers, lightning and short-term intensification of the wind. Rains had torrential character and water quantities have locally exceeded 30 l/m2 - the maximum amount registered being of 42 l/m2 in Dărmăneşti. The wind has increased during rainfall, with gusts over 100 km / h (104 km / h at the meteorological station Târgoviste) or had an squall aspect. Thermal comfort index (ITU) has exceeded the threshold of 80 units. This paper presents the evolution of weather using data from weather stations, radar products, satellite and radio aerial surveys data, as well as synoptic maps. An evaluation was made of weather events and their environmental impact on Lunguleţu locality from Dâmboviţa County.